Research Event

The actin cytoskeleton is extremely dynamic and supports diverse cellular functions in many physiological and pathological processes, including tumorigenesis. However, the mechanisms that regulate the actin-related protein 2/3 (ARP2/3) complex and thereby promote actin polymerization and organization in cancer cells are not well-understood. We previously implicated the proline-rich 11 (PRR11) protein in lung cancer development. In this study, using immunofluorescence staining, actin polymerization assays, and siRNA-mediated gene silencing, we uncovered that cytoplasmic PRR11 is involved in F-actin polymerization and organization. We found that dysregulation of PRR11 expression results in F-actin rearrangement and nuclear instability in non-small cell lung cancer cells. Results from molecular mechanistic experiments indicated that PRR11 associates with and recruits the ARP2/3 complex, facilitates F-actin polymerization, and thereby disrupts the F-actin cytoskeleton, leading to abnormal nuclear lamina assembly and chromatin reorganization. Inhibition of the ARP2/3 complex activity abolished irregular F-actin polymerization, lamina assembly, and chromatin reorganization due to PRR11 overexpression. Notably, experiments with truncated PRR11 variants revealed that PRR11 regulates F-actin through different regions. We found that deletion of either the N or C terminus of PRR11 abrogates its effects on F-actin polymerization and nuclear instability and that deletion of amino acid residues 100–184 or 100–200 strongly induces an F-actin structure called the actin comet tail, not observed with WT PRR11. Our findings indicate that cytoplasmic PRR11 plays an essential role in regulating F-actin assembly and nuclear stability by recruiting the ARP2/3 complex in human non-small cell lung carcinoma cells.

Amid ongoing Brexit negotiations, much remains uncertain for the roughly 1 million UK citizens living elsewhere in the European Union. This report offers a demographic profile of these Brexpats, considering what form an EU-UK deal on citizens’ rights might take and identifying key challenges many Britons are likely to face—including difficulty securing legal status and accessing labor markets, social security, and health-care systems.

Who is an immigrant? Does that status change if, for example, a foreigner marries a native-born resident or serves in his or her adopted country's military? This explainer answers basic questions about international migrants—who they are, their top destinations, where they come from, how they are counted, and more.

This MPI Europe webinar examines innovative ways to better design and implement predeparture orientation programs for resetttling refugees. The discussion features observations from a refugee who went through an orientation program before being resettled in the Netherlands, and a resettlement agency official in Norway.

With thousands more migrants potentially traveling through the Western Balkans this year, this MPI Europe webinar explores the implications of the buttressed EU border on the bloc’s neighbors, including the issues of outsourcing migration control, EU support for addressing irregular migration in neighboring countries, and considerations for EU policymakers.

With thousands migrants potentially traveling through the Western Balkans this year, this MPI Europe webinar explores the implications of the buttressed EU border on the bloc’s neighbors, the migrants transiting these routes, and the local communities. Experts also explored how the European Union can support efforts to address irregular migration in neighboring countries, and what are the tradeoffs and considerations that policymakers must weigh. 

Marking the release of MPI President Andrew Selee's latest book, speakers explore emerging trends in migration, economic interdependence, technology innovation, and cultural exchange that are transforming the relationship between the United States and Mexico, and the policy implications of these changes for the future.

What President Trump calls a border crisis is in fact a crisis in the asylum system—one worsened at every turn by his administration’s harsh policies and rhetoric. Rather than spend $5.7 billion on a wall, it would be far more effective to use the money to retool an overwhelmed asylum system, adapt outmatched border enforcement infrastructure to respond to the changing composition of arrivals, and work cooperatively with Mexico to tackle the factors propelling Central Americans to flee.

Though a faceoff between the U.S. executive and legislative branches is now in the courts, with President Trump's decision to declare a national emergency so he can allocate more money for construction of a border wall, a less-noted dispute has been taking place over the Department of Homeland Security's decision to add thousands more immigration detention beds than Congress provides annually, as this article explains.

The House is set to vote on two bills that would largely dismantle the U.S. asylum system at the southern border by significantly narrowing grounds to apply for asylum, eliminating protections for the vast majority of unaccompanied minors, and unilaterally declaring Mexico a safe third country. The result would be a sharp reduction in the number of people permitted to seek humanitarian protection, as this commentary explains.

A report release and presentation of first-ever U.S. estimates on the actual economic costs of skill underutilization for immigrants, their families, and the U.S. economy, in terms of forgone earnings and unrealized federal, state, and local taxes.

Award winners were honored at the second annual awards ceremony in Washington, DC, on May 18, 2010.

Winners of the 2nd annual E Pluribus Unum Prizes awarded to exceptional immigrant integration initiatives by MPI's National Center on Immigrant Integration Policy are the Illinois New Americans Integration Initiative; the Latino Community Credit Union in Durham, NC; Tacoma Community House in Tacoma, WA; and Upwardly Global in San Francisco, CA. McDonald's Corp. of Oak Brook, IL, received the sole honorable mention. The Prizes seek to reward exemplary efforts that uphold and update the ideal of "out of many, one" and inspire others to take on the important work of helping immigrants and their children join the mainstream of U.S. society as well as build stronger ties between immigrants and the native-born. Award winners were honored at the second annual awards ceremony in Washington, DC, on May 18, 2010. Watch highlights of the ceremony here.

Remain in Mexico—the Trump administration policy aimed at deterring the rising numbers of migrants from Central America by requiring them to stay in Mexico through most of their U.S. asylum adjudication process—bears striking similarities to U.S. policy in the 1980s and 1990s that sought to discourage Haitians from making the sea journey to the United States. This article explores the parallels and differences between Remain in Mexico and the earlier narrowing of asylum for Haitians.

Approximately 11,500 unaccompanied children were apprehended at the U.S.-Mexico border in May, putting this year on track to exceed 2014's surge. As the U.S. government struggles to care for these child migrants, with public outrage mounting over reports of unsafe, filthy conditions in initial Border Patrol custody, the failure of the executive branch and Congress to plan for increased shelter and care demands are increasingly apparent, as this article explores.

This report analyzes the exploitation of migrants in three spheres: the domestic care sector, the labor market, and the sex industry. It details several obstacles governments face in their efforts to weaken the "bad actors" that profit from exploitation, and shows how one of the biggest challenges facing law enforcement is that serious criminals and lawbreakers often operate on the edge of legality and exploit legal routes wherever possible.

Testimony of Marc R. Rosenblum, Deputy Director, U.S. Immigration Program, before the House Judiciary Committee on the efficacy of immigration enforcement at the U.S. border and in the interior.

Marking the release of an MPI report, this briefing explores the effects of recent revisions in DHS immigration enforcement priorities on deportations within the U.S. interior.

China has been Africa’s largest trading partner since 2009, and as commerce and investment have increased, so have flows of people in both directions. With an estimated 1 million to 2 million Chinese migrants across Africa, some countries have relaxed their short-term visa requirements in hopes of facilitating cultural and business exchanges. High levels of Chinese investment do not, however, correlate with more liberal visa policies, as this article explores.

This event focuses on the changing face of Mexican migration to the United States, Mexican immigrants' contributions to U.S. society and political and economic power, as well as that of those who have returned to Mexico.

Thailand has become a key destination for migrant workers, primarily from Myanmar, Cambodia, and Laos. Many lack authorization, however, and as their numbers have grown, so has the government's intent in regulating their movement—sometimes provoking unintended results. This article explores recent patterns in labor migration to Thailand and examines the likely impacts of a 2017 decree criminalizing illegal employment.

In advance of the December 2018 adoption of the Global Compact for Safe, Orderly, and Regular Migration and its commitment to facilitate the return, readmission, and reintegration of migrants, this webinar examines the policies, practices, and contextual factors that make compulsory returns such a difficult issue for international cooperation, and the programs that are being implemented to make reintegration of returnees sustainable.

From ongoing emigration flows and a surge in asylum seekers, to more than 150,000 returnees, this country profile examines contemporary and historical migration trends in Albania. Driven by extreme poverty and unemployment, more than one-third of Albania's population has emigrated in the last 25 years. The government now seeks to capitalize on diaspora resources by linking migration and development policies.

The Cuban Revolution unleashed a massive exodus from the island. Cuba is now among the top origin countries of immigrants in the United States—where for decades they have received preferential treatment—with smaller numbers across Europe and Latin America. This article explores the evolution of Cuban migration, particularly within the context of the Cold War and shifting U.S. policies toward the country.

With nearly 1.4 million internally displaced persons (IDPs), Ukraine is home to one of the largest IDP populations in the world. Five years after Russia's annexation of Crimea, displaced Ukrainians continue to face challenges related to national identity, social cohesion, and political participation. While the Ukrainian government has had some success integrating IDPs, the conflict’s end remains uncertain, and many are unlikely to return to their communities of origin no matter the outcome.

Climate-related displacement is not hypothetical: An average of 21.5 million people per year have been displaced since 2008 by natural disasters, and thousands more have fled slow-onset environmental hazards. While migration can serve as a safety valve to adapt to changing conditions, few orderly, legal channels exist for climate migrants (also known as environmental migrants), as this article explores.

Marking the release of an MPI report, speakers on this webinar present an overview of regional immigration enforcement trends, including U.S. and Mexican apprehensions and deportations of both children and adults, along with a demographic, socioeconomic, and criminal profile of child and adult deportees.

This report examines the rising numbers of apprehensions and deportations of Central American children and adults by the United States and Mexico, and provides a demographic, socioeconomic, and criminal profile of deportees to El Salvador, Guatemala, and Honduras. The report traces how rising Mexican enforcement is reshaping regional dynamics and perhaps ushering in changes to long-lasting trends in apprehensions.

This webinar includes an overview of regional immigration enforcement trends, including U.S. and Mexican apprehensions and deportations of Central American migrants, along with a demographic, socioeconomic, and criminal profile of child and adult deportees.

A discussion, including the former United Nations Deputy High Commissioner for Refugees, examining the huge strains on the global protection system and how it can better respond to protracted refugee situations and other long-term displacement, focusing on the conclusions of the Transatlantic Council on Migration's recent meeting, Beyond Asylum: Rethinking Protection Policies to Meet Sharply Escalating Needs.

An MPI Leadership Visions discussion with the Foreign Minister of Mexico, Claudia Ruiz-Massieu, for her first public appearance in Washington, DC. 

Mexican immigration to the United States has slowed in recent years, and since the Great Recession more Mexican immigrants have returned to Mexico than have migrated to the United States. Mexicans, however, remain the largest origin group in the country, accounting for 28 percent of all immigrants. See how Mexican immigrants compare to the overall foreign- and U.S.-born populations on key indicators with this Spotlight article.

Una llamada en español que analiza las dinámicas cambiantes y las cuestiones políticas relacionadas con la migración a través de México a los Estados Unidos.

Durante este seminario, ponentes presentaron hallazgos de un reciente informe que utiliza datos de agencias gubernamentales mexicanas, entrevistas con funcionarios clave y relatos de la sociedad civil para examinar el marco legal para la protección de menores no acompañados y su aplicación, al igual que las brechas entre este marco y su aplicación durante los procesos de detención, interrogación y alojamiento. El presidente de MPI, Andrew Selee, también expuso cómo el cambio en la dinámica política en Estados Unidos puede afectar las cuestiones migratorias con México, así como los efectos en la relación bilateral en medio de tensiones sobre el muro fronterizo, la renegociación del acuerdo del TLCAN y una cifra significativa de repatriaciones de migrantes mexicanos.

Marking the release of MPI President Andrew Selee's book, this discussion explores the emerging trends in migration, economic interdependence, technology innovation, and cultural exchange that are transforming the relationship between the United States and Mexico.

Authors of a year-long study of reception and reintegration services in Mexico and the Northern Triangle discuss the findings of their fieldwork, including the differing reintegration needs of individual migrant groups, promising reception and reintegration programs, ongoing challenges for origin communities, and policy recommendations to improve reintegration strategies. 

OBJECTIVE

To evaluate and compare the efficacy of long-term use of low-dose aspirin for the prevention of dementia in men and women.

OBJECTIVE

Reparixin is an inhibitor of CXCR1/2 chemokine receptor shown to be an effective anti-inflammatory adjuvant in a pilot clinical trial in allotransplant recipients.

Playing in Taiwan once was a last option Justin Nicolino had to continue a professional baseball career. Now the former Miami Marlins pitcher is one of many ex-MLB players who provide entertainment for U.S. sports fans.

Former American Basketball Association commissioner and NBA executive Mike Storen died Thursday after a lengthy battle with a rare form of cancer. He was 84.

Nehman Lauder
Oct 1, 2005; 23:191-192
Case Studies

OBJECTIVE

To compare medical resource use, costs, and health utilities for 14,752 patients with type 2 diabetes who were randomized to once-weekly exenatide (EQW) or placebo in addition to usual diabetes care in the Exenatide Study of Cardiovascular Event Lowering (EXSCEL).

OBJECTIVE

Type 2 diabetes mellitus (T2DM) is associated with dyslipidemia, but the detailed alterations in lipid species preceding the disease are largely unknown. We aimed to identify plasma lipids associated with development of T2DM and investigate their associations with lifestyle.

OBJECTIVE

Sustained excess BMI increases the risk of type 1 diabetes (T1D) in autoantibody-positive relatives without diabetes of patients. We tested whether elevated BMI also accelerates the progression of islet autoimmunity before T1D diagnosis.

OBJECTIVE

To compare trends in Medicaid expenditures among adults with diabetes who were newly eligible due to the Affordable Care Act (ACA) Medicaid expansion to trends among those previously eligible.