Ordered activation of the Ig lambda locus in Abelson B cell lines
نویسندگان
چکیده
Derivatives of the mu-producing Abelson line P8 have been analyzed for L chain gene rearrangements. Two of seven clones studied assembled their V lambda genes while growing in culture. V lambda gene rearrangements occurred only in those Abelson subclones that either were rearranging or had rearranged their recombining sequence (RS) element on both Ig kappa alleles. Our data suggest that (a) RS rearrangements are preferentially initiated in kappa- pre-B cells; and (b) the deletion or inactivation of sequences lying between J kappa and RS is a requirement for the activation of the Ig lambda locus.
منابع مشابه
DNase I sensitivity of immunoglobulin light chain genes in Abelson murine leukemia virus transformed pre-B cell lines.
We have used Abelson murine leukemia virus (A-MuLV) transformed pre-B cell lines to test the hypothesis that the rearrangement potential of a developing B-lymphocyte is dependent on an "opening" of the chromatin structure surrounding immunoglobulin (Ig) genes, thus allowing accessibility to an Ig gene recombinase. The chromatin structures surrounding heavy (H), kappa (kappa), and lambda (lambda...
متن کاملActive lambda and kappa antibody gene rearrangement in Abelson murine leukemia virus-transformed pre-B cell lines
The two Abelson murine leukemia virus (A-MuLV)-transformed cell lines, BM18-4 and ABC-1, undergo immunoglobulin L-chain gene recombination during passage in tissue culture. BM18-4 cells are capable of kappa gene recombination, whereas ABC-1 cells are capable of both kappa and lambda gene recombination. The expression of H chains is apparently not necessary for continuing L chain gene recombinat...
متن کاملFunctional Immunoglobulin Light Chain Genes
Rearrangement of Ig genes proceeds during B cell differentiation in an orderly fashion. First the heavy (H) chain gene is rearranged in pre-B cells . These cells can express cytoplasmic A chain but no light (L) chain (1). The K light chain genes rear range next and if they fail to produce a functional gene on either chromosome the X light chain genes are rearranged (2) . It is generally believe...
متن کاملVirus - transformed Pre - B Cells Show Ordered Activation but Not Inactivation of Immunoglobulin
Virus-transformed pre-B cells undergo ordered immunoglobulin (Ig) gene rearrangements during culture. We devised a series of highly sensitive polymerase chain reaction assays for Ig gene rearrangement and unrearranged Ig gene segment transcription to study both the possible relationship between these processes in cultured pre-B cells and the role played by heavy (H) chain (,u) protein in regula...
متن کاملVirus-transformed pre-B cells show ordered activation but not inactivation of immunoglobulin gene rearrangement and transcription
Virus-transformed pre-B cells undergo ordered immunoglobulin (Ig) gene rearrangements during culture. We devised a series of highly sensitive polymerase chain reaction assays for Ig gene rearrangement and unrearranged Ig gene segment transcription to study both the possible relationship between these processes in cultured pre-B cells and the role played by heavy (H) chain (mu) protein in regula...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- The Journal of Experimental Medicine
دوره 168 شماره
صفحات -
تاریخ انتشار 1988