Detection of Novel LAMC2 Mutations in Herlitz Junctional Epidermolysis Bullosa
Detection of Novel LAMC2 Mutations in Herlitz Junctional Epidermolysis Bullosa
复制标题
赫利兹交界性大疱性表皮松解症中新型 LAMC2 突变的检测
DOI:
10.1007/bf03401804
复制
发表时间:
1997
影响因子:
5.7
通讯作者:
J. Uitto
中科院分区:
文献类型:
--
作者:
L. Pulkkinen;J. McGrath;T. Airenne;H. Haakana;K. Tryggvason;S. Kivirikko;G. Meneguzzi;J. Ortonne;A. Christiano;J. Uitto
BackgroundLaminin 5, an anchoring filament attachment protein within the lamina lucida of the basement membrane zone involved in the pathogenesis of junctional epidermolysis bullosa (JEB), consists of three polypeptide subunits, the α3, β3, and γ2 chains, which are encoded by the LAMA3, LAMB3, and LAMC2 genes, respectively. To facilitate identification of pathogenetic mutations in LAMC2, a strategy based on direct amplification of genomic DNA by PCR or mRNA by RT-PCR, followed by heteroduplex analysis of the PCR products, was developed.Materials and MethodsPrimer pairs for amplification of the complete cDNA as well as the 23 individual exons in the genomic DNA, which encode the entire γ2 chain of laminin 5, were established. The primers for amplification of exons from genomic DNA were positioned at least 24 bp away from the intron-exon borders in the flanking intronic sequences. For amplification of cDNA generated by RT-PCR, eight primer pairs covering overlapping segments of the entire coding sequence of LAMC2 mRNA were used. The amplified sequences were scanned for pathogenetic mutations and sequence variations in JEB patients and unrelated control individuals by heteroduplex analysis by means of conformation sensitive gel electrophoresis (CSGE).ResultsUtilizing the strategy developed in this study, we identified pathogenetic mutations in three patients with the Herlitz (lethal) variant of JEB, and eight intragenic normal polymorphisms, which are useful for linkage analysis, in the LAMC2 gene.ConclusionsThe methodology described in this study is capable of detecting single-base substitutions or small insertions and deletions in the LAMC2 gene. Demonstration of mutations in this gene in JEB patients further emphasizes the role of laminin 5 in providing integrity to the cutaneous basement membrane zone.
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DOI:
10.1111/1523-1747.ep12666027
发表时间:
1995
期刊:
The Journal of investigative dermatology
影响因子:
--
作者:
Vailly,J;Pulkkinen,L;Christiano,AM;Tryggvason,K;Uitto,J;Ortonne,JP;Meneguzzi,G
通讯作者:
Meneguzzi,G
DOI:
--
发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Gerecke,DR;Wagman,DW;Champliaud,MF;Burgeson,RE
通讯作者:
Burgeson,RE
DOI:
10.1111/1523-1747.ep12605904
发表时间:
1995
期刊:
The Journal of investigative dermatology
影响因子:
--
作者:
McGrath,JA;Pulkkinen,L;Christiano,AM;Leigh,IM;Eady,RA;Uitto,J
通讯作者:
Uitto,J
DOI:
10.1111/1523-1747.ep12346349
发表时间:
1996
期刊:
The Journal of investigative dermatology
影响因子:
--
作者:
McGrath,JA;Kivirikko,S;Ciatti,S;Moss,C;Christiano,AM;Uitto,J
通讯作者:
Uitto,J
影响因子:
3.5
作者:
Baudoin,C;Miquel,C;Gagnoux-Palacios,L;Pulkkinen,L;Christiano,AM;Uitto,J;Tadini,G;Ortonne,JP;Meneguzzi,G
通讯作者:
Meneguzzi,G