Excision of nucleoside analogs from DNA by p53 protein, a potential cellular mechanism of resistance to inhibitors of human immunodeficiency virus type 1 reverse transcriptase.

نویسندگان

  • Mary Bakhanashvili
  • Elena Novitsky
  • Ethan Rubinstein
  • Itzchak Levy
  • Galia Rahav
چکیده

We investigated the ability of p53 in cytoplasm to excise nucleoside analogs (NAs). A decrease in incorporation of NAs by human immunodeficiency virus type 1 reverse transcriptase and their excision from DNA by p53, provided by the cytoplasmic fraction of LCC2 cells, suggest that p53 in cytoplasm may act as an external proofreader for NA incorporation.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Resistance mechanism of human immunodeficiency virus type-1 protease to inhibitors: A molecular dynamic approach

Human immunodeficiency virus type 1 (HIV-1) protease inhibitors comprise an important class of drugs used in HIV treatments. However, mutations of protease genes accelerated by low fidelity of reverse transcriptase yield drug resistant mutants of reduced affinities for the inhibitors. This problem is considered to be a serious barrier against HIV treatment for the foreseeable future. In this st...

متن کامل

Current antiretroviral drugs for human immunodeficiency virus infection: review article

Currently, there are about 37 million people worldwide living with human immunodeficiency virus (HIV) /AIDS, with an estimated two million new cases per year globally. According to estimates from the World Health Organization (WHO), only 75% of the population with HIV know their status. Initially, HIV infection was associated with significantly increased rates of mortality and morbidity. Howeve...

متن کامل

Resistance to nucleoside analogs of selective mutants of human immunodeficiency virus type 2 reverse transcriptase.

We have studied selected mutants of human immunodeficiency virus type 2 (HIV-2) reverse transcriptase (RT) in a cell-free system in order to assess whether the mutant proteins exhibit a reduction in the sensitivity to nucleoside analog inhibitors similar to that of HIV-1 RT. We have modified, by site-directed mutagenesis, several of those amino acid residues so that their equivalent substitutio...

متن کامل

Molecular mechanism by which the K70E mutation in human immunodeficiency virus type 1 reverse transcriptase confers resistance to nucleoside reverse transcriptase inhibitors.

The K70E mutation in human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT) has become more prevalent in clinical samples, particularly in isolates derived from patients for whom triple-nucleoside regimens that include tenofovir (TNV), abacavir, and lamivudine (3TC) failed. To elucidate the molecular mechanism by which this mutation confers resistance to these nucleoside RT inhi...

متن کامل

3'-Azido-3'-deoxythymidine resistance suppressed by a mutation conferring human immunodeficiency virus type 1 resistance to nonnucleoside reverse transcriptase inhibitors.

Nonnucleoside reverse transcriptase (NNRT) inhibitors (R82913; (+)-S-4,5,6,7-tetrahydro-9-chloro-5-methyl-6-(3-methyl-2-butenyl)- imidazo[4,5,1-jk][1,4]-benzodiazepin-2(1H)-thione; Cl-TIBO; and BI-RG-587, nevirapine) were used to select resistant human immunodeficiency virus type 1 (HIV-1) variants by passage in cell cultures of wild-type or 3'-azido-3'-deoxythymidine (zidovudine; AZT)-resistan...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Antimicrobial agents and chemotherapy

دوره 49 4  شماره 

صفحات  -

تاریخ انتشار 2005